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Col du Gerbier de Jonc – Lac d’Issarlès loop from Le Lac-d'Issarlès

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Col du Gerbier de Jonc – Lac d’Issarlès loop from Le Lac-d'Issarlès

Hard

5.0

(5)

riders

Col du Gerbier de Jonc – Lac d’Issarlès loop from Le Lac-d'Issarlès

03:36

51.7km

1,000m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: April 15, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional des Monts d'Ardèche

Waypoints

Start point

Parking

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20.8 km

La Source géographique de la Loire

Highlight • River

One of the sources of the Loire - you can get your feet wet here, but be careful, it's freezing cold :-)

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21.4 km

Col du Gerbier de Jonc

Highlight • Mountain Pass

The Col du Gerbier de Jonc from Saint-Martin-de-Valamas is 22.9 km long with a total drop of 885 m. The average gradient is 3.8% with maximum gradients of 8.3%.

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43.8 km

Col de Gage - south side

Highlight (Segment) • Other

Magnificent pass road to reach the Col de Gage, which descends on Lake Issarlès below. 6% average, with some steep passages and hairpin bends!

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49.6 km

Col de Gage - 1,091 m

Highlight • Other

The Col de Gage is a road pass located in Ardèche. It sits at an altitude of 1,091 meters.
Beautiful view of the lake from the pass!

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49.6 km

Col de Gage - from Issarlès

Highlight (Segment) • Other

Steep but beautiful climb in the middle of a dense deciduous forest.

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51.2 km

Beautiful mountain lake in a region with many marked hiking trails. There is a beach on the north shore where swimming is monitored in July/August. Due to the altitude the water is always a bit fresh...

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51.7 km

End point

Parking

Way Types & Surfaces

Way Types

50.1 km

971 m

344 m

331 m

< 100 m

Surfaces

49.9 km

1.15 km

344 m

275 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (1,410 m)

Lowest point (950 m)

Weather

Monday 18 May

18°C

3°C

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Col du Gerbier de Jonc – Lac d’Issarlès loop from Le Lac-d'Issarlès

La Source géographique de la Loire

Mont Gerbier de Jonc

Col du Gerbier de Jonc

Base of the La Palisse Dam

Col de Gage - south side

Col de Gage - 1,091 m

Col de Gage - from Issarlès

Lac d’Issarlès

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